Marshall Series. 113 



Marshall clay loam. — Dark-brown to black clay loam, under- 

 lain by a dark-brown clay loam, which becomes a very stiff, yel- 

 low clay at about 24 inches below the surface. When moist, the 

 soil is plastic, and feels smooth when rubbed between the fingers; 

 when dry it becomes mellow and friable. This type occupies 

 level or gently rolling prairie uplands. The drainage is generally 

 good. In adaptation this soil is a general farming type, corn, oats, 

 and grass being the leading products. It is, in fact, an ideal corn 

 and hay soil, the yields per acre varying from 25 to 60 bushels of 

 the former and from 1 to 4 tons of the latter. Blue grass makes 

 a luxuriant pasture, the sod being very permanent. Fruit and 

 vegetables also produce well. 



1 2 



Soil (5) 9 19 



Subsoil (5) 11 21 



Acres. 



Cerro Gordo County, Iowa 67, 456 



Story County, Iowa 8, 38-1 



Miami black clay loam.« — Black clay loam, 10 to 12 inches deep, 

 underlain by a tenacious drab clay. Of Glacial origin. Generally 

 level, naturally poorly drained. When thoroughly drained this 

 soil is very productive, i)articularly for corn. It is also well 

 adapted to grass and wheat. 



12 3 4 



Soil(39) 7 20 53 20 



Subsoil (42) 3 13 58 24 



Acres. I Acres. 



Allegan County, Mich & 12, 460 | McLean County, 111 70, 144 



Brookings, S. Dak 43, 456 Madison County, Ind 31, 360 



Cerro Gordo County, loAva 4, 032 Marshall, Minn 29, 760 



Columbus, Ohio 33, 792 



Fargo, N. Dak 74,880 



Grank Forks, N. Dak 44, 352 



Jamestown, N. Dak 5, 120 



Janesville, Wis 1, 856 



Knox County, 111 4, 928 



Montgomery County , Ohio 18, 000 



Pontiac, Mich n^ 840 



Sangamon County, 111 88, 128 



Story County, Iowa 21, 952 



Tazewell County, 111 61, 184 



Toledo, Ohio 165, 056 



«This soil belongs to the Marshall series and should have been called the 

 Marshall black clay loam, but owing to the extensive use of the name the 

 term Miami black clay loam will still be used in all areas. 



& Mapped as Allegan black clay, which name will not hereafter be used. 



31896—0-1 8 



